/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 * 
 *    (C) 2003-2008, Open Source Geospatial Foundation (OSGeo)
 *    
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 */
package org.geotools.data;

import java.io.IOException;
import java.util.Collection;
import java.util.Iterator;
import java.util.NoSuchElementException;

import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.feature.CollectionListener;
import org.geotools.feature.FeatureCollection;
import org.geotools.feature.FeatureIterator;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.opengis.feature.FeatureVisitor;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.filter.Filter;
import org.opengis.filter.sort.SortBy;
import org.opengis.util.ProgressListener;

/**
 * This class is a bridge between a FeatureCollection<SimpleFeatureType,SimpleFeature> and
 * the SimpleFeatureCollection interface.
 * <p>
 * This class is package visbile and can only be created by DataUtilities.simple( featureCollection );
 * it is under lock and key so that we can safely do an instance of check and not get multiple
 * wrappers piling up.
 * 
 * @author Jody
 * @since 2.7
 */
class SimpleFeatureCollectionBridge implements SimpleFeatureCollection {

    private FeatureCollection<SimpleFeatureType, SimpleFeature> collection;

    public SimpleFeatureCollectionBridge(
            FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollection) {
        if( featureCollection == null ){
            throw new NullPointerException("FeatureCollection required");
        }
        if( featureCollection instanceof SimpleFeatureCollection){
            throw new IllegalArgumentException("Already a SimpleFeatureCollection");
        }
        if( featureCollection == null ){
            throw new NullPointerException("FeatureCollection required");
        }        
        this.collection = featureCollection;
    }

    public SimpleFeatureIterator features() {
        final FeatureIterator<SimpleFeature> features = collection.features();
        return new SimpleFeatureIterator() {            
            public SimpleFeature next() throws NoSuchElementException {
                return features.next();
            }
            
            public boolean hasNext() {
                return features.hasNext();
            }
            
            public void close() {
                features.close();
            }
        };
    }

    public SimpleFeatureCollection sort(SortBy order) {
        return new SimpleFeatureCollectionBridge( collection.sort(order) );
    }

    public SimpleFeatureCollection subCollection(Filter filter) {
        return new SimpleFeatureCollectionBridge( collection.subCollection(filter) );
    }

    public void accepts(FeatureVisitor visitor, ProgressListener progress) throws IOException {
        collection.accepts(visitor, progress);
    }

    public boolean add(SimpleFeature feature) {
        return collection.add(feature);
    }

    public boolean addAll(Collection<? extends SimpleFeature> toAdd) {
        return collection.addAll(toAdd);
    }

    public boolean addAll(
            FeatureCollection<? extends SimpleFeatureType, ? extends SimpleFeature> resource) {
        return collection.addAll(resource);
    }

    public void addListener(CollectionListener listener) throws NullPointerException {
        collection.addListener(listener);
    }

    public void clear() {
        collection.clear();
    }

    public void close(FeatureIterator<SimpleFeature> close) {
        collection.close(close);
    }

    public void close(Iterator<SimpleFeature> close) {
        collection.close(close);
    }

    public boolean contains(Object o) {
        return collection.contains(o);
    }

    public boolean containsAll(Collection<?> o) {
        return collection.containsAll(o);
    }

    public ReferencedEnvelope getBounds() {
        return collection.getBounds();
    }

    public String getID() {
        return collection.getID();
    }

    public SimpleFeatureType getSchema() {
        return collection.getSchema();
    }

    public boolean isEmpty() {
        return collection.isEmpty();
    }

    public Iterator<SimpleFeature> iterator() {
        return collection.iterator();
    }

    @SuppressWarnings("deprecation")
    public void purge() {
        collection.purge();
    }

    public boolean remove(Object o) {
        return collection.remove(o);
    }

    public boolean removeAll(Collection<?> c) {
        return collection.removeAll(c);
    }

    public void removeListener(CollectionListener listener) throws NullPointerException {
        collection.removeListener(listener);
    }

    public boolean retainAll(Collection<?> c) {
        return collection.retainAll(c);
    }

    public int size() {
        return collection.size();
    }

    public Object[] toArray() {
        return collection.toArray();
    }

    public <O> O[] toArray(O[] a) {
        return collection.toArray(a);
    }

    
}